Base station apparatus and communication control method

Abstract

The object is achieved by providing a base station apparatus for performing time and frequency scheduling in uplink packet access with: an interference amount measurement part configured to measure an uplink interference amount for each interference amount measurement unit which comprises a predetermined period and a predetermined number of frequency blocks; an interference amount determination part configured to determine whether the uplink interference amount satisfies a predetermined condition; and an overload indicator reporting part configured to report an overload indicator to a neighboring cell when the predetermined condition is satisfied.

The invention claimed is: 
     
       1. An eNode B comprising:
 an interference amount measurement part configured to measure, in each resource block, each resource block comprising one time slot and at least one subcarrier, an uplink interference amount in a predetermined cell; 
 an interference amount determination part configured to determine whether there is a variation in an interference condition; and 
 an overload indicator reporting part configured to report an overload indicator, indicating the uplink interference amount of the predetermined cell, to a neighboring eNode B through an interface between the eNode B and the neighboring eNode B, if it is determined that there is a variation in the interference condition. 
 
     
     
       2. A user equipment comprising:
 a transmission part configured to transmit a signal that causes an eNode B to measure, in each resource block, each resource block comprising one time slot and at least one subcarrier, an uplink interference amount in a predetermined cell; 
 a communicating part configured to communicate with the eNode B, wherein the eNode B determines whether there is a variation in an interference condition and reports an overload indicator, indicating the uplink interference amount of the predetermined cell, to a neighboring eNode B through an interface between the eNode B and the neighboring eNode B, when there is a variation in the interference condition. 
 
     
     
       3. A communication control method of an eNode B, the method comprising:
 measuring, in each resource block, each resource block comprising a-one time slot and at least one subcarrier, an uplink interference amount in a predetermined cell; 
 determining whether there is a variation in an interference condition; and 
 if there is a variation in the interference condition, reporting an overload indicator, indicating the uplink interference amount of the predetermined cell, to a neighboring eNode B through an interface between the eNode B and the neighboring eNode B.